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ZnO NANOPARTICLES – A RECYCLABLE CATALYST FOR THE SYNTHESIS OF BIS(PYRAZOLYL)METHANES

K. Eskandari, B. Karami, S. Khodabakhshi
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Abstract


A one-pot condensation between a wide range of aryl aldehydes and 5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one by employing ZnO nanoparticles as recyclable and highly efficient catalyst to produce new and known bis(pyrazolyl)methanes in aqueous media is introduced. This efficient and new method to bis(pyrazolyl)methanes has some advantages, such as the use of a safe and reusable catalyst, simple operation, short reaction times and good to excellent yields of the products.

How to Cite
Eskandari, K.; Karami,B.; Khodabakhshi, S. Chem. Heterocycl. Compd. 2015, 50, 1658. [Khim. Geterotsikl. Soedin. 2014, 1807.]

For this article in the English edition see DOI 10.1007/s10593-015-1635-3


Keywords


aldehyde; 2,4-dihydro-3H-pyrazol-3-one; ZnO nanoparticles; Knoevenagel condensation; Michael addition

Full Text: PDF Supplementary File(s): Supporting information (796KB)


 

 

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